We have tested the current version 1.84 with a Bluetooth keyboard and it correctly turns pages forwards and backwards with the up and down arrow keys. We can't speak for or troubleshoot for any specific pedal as we do not own or use any of them. You can try completely exiting out of iGigBook (note I did not say uninstall), check the settings app and toggle the iGigBook setting for Bluetooth foot pedals to off and then to on and launch the app.